a(n) = A143007(2*n-1, n-1) for n >= 1.

A364244

a(n) = A143007(2*n-1, n-1) for n >= 1.

Terms

    a(0) =1a(1) =25a(2) =1441a(3) =107353a(4) =9073501a(5) =826861993a(6) =79219824685

External references